Pure lactic acid is a colorless liquid, is a colorless to pale yellow liquid. Odorless, hygroscopic. The relative density of 1.2060 (25/4 ℃). Melting point 18 ℃. Boiling point 122 ℃ (2kPa). Refractive index nD (20 ℃) ??1.4392. With water, ethanol, glycerin, insoluble in chloroform, carbon disulfide and petroleum ether. Heating under normal pressure, concentrated to 50%, part of the anhydride into milk, thus products often contain 10% -15% of the milk anhydride.
2013年8月9日星期五
innovative structure of polylactic acid amides more
Green TMC-328 is a multi-innovation structures amides, non-toxic, odorless, polylactic acid, polyethylene Lactic acid (PET), polyethylene terephthalate, polybutylene terephthalate (PBT) such as a crystalline resin having good nucleation promoting effect. Using this new additives, can significantly improve the crystallinity of the crystalline polyester, improved heat distortion resistance products, transparency, impact resistance, etc., and shorten the molding cycle products, improve production efficiency.
Studies show that the lactic acid powder resin to which 0.2% to 0.3% of the TMC-328 transparent nucleating agent, can promote the nucleation of PLA, spherulite size refinement, thus speeding up the crystallization of the resin, to improve the transparency of products, heat stability resistance and tensile strength, flexural modulus and other mechanical properties.
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